Lock-rod elevator



Feb. 19, 1929. 1,703,014

E. L. PATTERSON LOCK ROD ELEVATOR Filed Aug. 6, 1927 2 Sheets-Sheet 1 E ZQFa tie rso n INVENTOR ATTORNEV Patented F eb; 19, 1929.-

UNITED STATES ERNEST'L. EATTERSON, 0F CROSS PLAINS, TEXAS.

LOCK-ROD ELEVATOR.

Application filed August 6,1927. Serial No. 211,130.

This invention relates to a device for pull ing pump rods from oil wells and the like, the general object of the invention being to provide a rod engaging member having spring actuated jaws thereon for holding a part of a rod in the member, with a bail so formed that in one position it will permit the jaws to open and in another position it will hold the jaws in closed position.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in theappended claim.

' In describing my invention in detail, ref erence will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a plan view of the device, with the jaws in closed position, parts being broken away.

Figure 2 in open position.

Figure 3- is a front view of the'device.

Figure 4c is a rear view thereof.

Figure 5 is a sectional view showingthe device in use.

In these views 1 indicates a substantially circular block or disk having a central circular opening 2 therein and an outwardly flaring notch 8 which is in comunication with the opening 2 and has its mouth passing through the front wall of the block so that the reduced part of a pump rod, such as shown at A in Figure 5, can pass through the notch into the opening 2 to permit the upper beveled wall 2 of the opening to engage a shoulder formed by an enlarged part of the rod. Two pairs 0 jaws 4 are pivoted to the block, as shown at 5, one jaw of each pair being arranged on the upper face of the block and the other jaw on the lower face thereof.

The jaws of each pair are connected together i by the rivets 6, the rivets at the rear of the jaws being engaged by the leaf springs 7 which are fastened to the block, these springs tending to hold the jaws closed. The front ends of the jaws project beyond the block and these front ends are cut away, as at 8, to form a V-shaped notch at the front ends of the jaws whenv the jaws are closed, this notch being in front of the notch 3 of the V block, when the jaws are closed, so that a is a similar view with the jaws pump rod entering this notch formed by the parts 8 of the jaws, will force the jaws apart so that the rodcan pass through the notch 3 and enter the opening 2. Then the jaws will close and hold the rod in the opening. A member 9 is pivoted to each sideof the block, as shown at 10, and a curved bail-11 has its ends connected with the membersf The members 9 have their side walls pivoted,

as at 12, so that when they are in horizontal position, the jaws can open but when they I are in upright or vertical position, said members will hold the jaws in closed position.

. The device is lowered into the well in a hori zontal position and then the beveled front rod below a shoulder thereon, whilethe bail 1s in horizontal position. The pressure of the rod on the beveled portions of the jaws will cause the jaws to open so that the rod can enter the opening 2, after which the springs will close the jaws. Then the bail is pulled to a vertical position, which will lock the 'aws tion that the advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the, appended claim.

Vhat I claim is i A device of the class described comprising a substantially circular block having a central opening therein and a not-ch in communiends of the jaws are forced against the pump 7 cation withthe opening and passing through the front wall of theblock, two pairs of aws pivoted to the block, one jaw of eachpair being arranged on the upper face of the block and the other jaw on the lower face thereof, springs for holding the jaws inclosed position,-the front ends of the jaws being beveled sothat when the jaws are pressed against an object, they will be moved to open position to permit the object to enter the openingv in the block and a bail pivoted to the sides of the block, said bail, when in horizontal posi- I tion, permitting the jaws to open and when in vertical position, the end portions of the bail will engage the sides of the jaws and hold thejaws in closed position. V

In testimony whereof Iaffix my signature.

- ERNEST L. PATTERSON. 

